Callaway Golf Company

Spalding Sports Worldwide, Inc.

Daniel Murphy

Kevin J Shannon

Vincent Simonds

Thomas J Kennedy, Iii

Michael John Tzivanis

David M Melanson

Gary Tavares

Joseph F Stiefel

Mark L Binette

Thomas A Veilleux

Thomas F Bergin

Molding equipment and related techniques for forming a golf ball are disclosed. The molding equipment includes the use of a mandrel with a spherical portion sized to fit within a molding chamber. The molding equipment and related processes are particularly useful when forming the various layers by reaction injection molding.

Process for forming portions of a golf ball cover

Pinless molding of a cover () for a golf ball (), and an apparatus and method for manufacturing a golf ball precursor product () for use in pinless molding is disclosed herein. Preferably the golf ball precursor product () comprises a core () and a mantle layer (). The golf ball precursor product () preferably has a plurality of lobes () extending from an innersphere (). The plurality of lobes () allow the golf ball precursor product () to be centered within a cover mold without the use of pins for centering.

Golf ball

Molding equipment and related techniques for forming a golf ball with one or more deep dimples are disclosed. The golf ball comprises a core and a cover layer, wherein the cover layer provides one or more deep dimples that extend through the cover layer to and/or into a layer or component underneath are disclosed. Preferably, the deep dimples are at least twice the depth of conventional dimples, more preferably, three or four times the depth of the conventional dimples. The deep dimples may be spherical or non-spherical, and the portion of the dimple that extends to or into the next inner layer may be the same or different shape as the outer portion of the dimple.

Molding processes and apparatuses for forming golf balls

Molding equipment and related techniques for forming a golf ball are disclosed. The golf ball comprises a core and a cover layer, wherein the cover layer provides one or more deep dimples that extend through the cover layer to and/or into a layer or component underneath are disclosed. The cover may be a single layer or include multiple layers. If the cover is a multi-layer cover, the dimples extend to or into at least the first inner cover layer, and may extend into two or more inner cover layers. If the cover is a single layer, the dimples extend to or into the core. The cover layer(s) may be formed from any material suitable for use as a cover, including, but not limited to, ionomers, non-ionomers and blends of ionomers and non-ionomers. The dimples may be spherical or non-spherical, and the portion of the dimple that extends to or into the next inner layer may be the same or different shape as the outer portion of the dimple. The molding equipment and related processes are particularly useful when forming the various layers by reaction injection molding.

Process for forming and removing a golf ball core or intermediate ball assembly

Molding processes and equipment for forming golf balls

The present invention provides a method of making a golf ball with an interior layer having a plurality of outwardly extending protrusions. A plurality of protrusion depressions are machined or otherwise formed on an inner surface of a mold. A center assembly is molded within the mold cavity. The center assembly may be a core comprising a plurality of protrusions on its outer surface or an intermediate layer comprising a plurality of protrusions disposed about a spherical core. A single or multi-layered cover is disposed about the center assembly having the plurality of protrusions.

Method of making golf balls having a protrusion center

A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are of at least two types including a first plurality of dimples having a minor axis and a major axis which together form the long axis of the first plurality of dimples. The minor axis being less than the major axis. A second plurality of dimples has a minor axis equal to that of the first plurality of dimples and a major axis less than the major axis of the first plurality of dimples but greater than the minor axis.

Golf ball having elongated dimples and method for making the same

A combination dimple pattern on the surface of a golf ball is characterized by both non-circular and non-circular compound dimples. The compound dimples include a first non-circular dimple portion and a second non-circular dimple portion arranged in a bottom surface of the first portion, with the second dimple portion having a depth greater than the depth of the first circular portion. The combination of compound and circular dimples on the surface of the ball improves the aerodynamic efficiency of the ball for more control of lift and drag of a spinning golf ball during flight.

Dual non-circular dimple for golf balls

A spherical ball and a method of making the spherical ball wherein the ball has a plurality of elongated dimples substantially covering the outer surface of the ball without any dimple overlap. The elongated dimples are defined by an oblong depression having a longitudinal axis and a length measured along the axis greater than a width measured perpendicular to the axis. The depression has a V-shaped configuration when viewed in a section taken through the longitudinal axis.

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Chicopee, MA, United States of America

Daniel Murphy